Lubricator.



No. 663,975. Patented nec. la, |900.'

E. McCOY.

LUB'RICATOR. (Ax'pucemn med my s, 1900. (nu Model.) 2 sheets-sheet 1.

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Eiga/@Maggy a, 11M-@M4 I M7/M. .2@ Wg@ zfyd No. 663,976. Patented nec. 1 6, |900.

E. MGCOY. LUBRIGATOR.

(Application Bled May 5, 1900.) (No Model.) Y 2 6mm-sheet 2.

v v NITED STATES EEICE. I

PATENT ELIJAII MocoY, or DETROIT, MICHIGAN, AssIeNoE To JOHN TEIX, or SAME PLACE.

LUBRICATQR.

SPECIFICATION forming part of Letters Patent No. 663,976,l dated. December 18, 1900.

Application tiled May 5, 1900.

To all whom t zaag/concern:

Be tknown that I, ELIJAHMoOoIga citizen of the United States'of America, residing at Detroit, in the county of Wayne and State of- Michigan, have invented certain new and use-1 ful Improvements in Lubricators,of which the following is a specification, reference being had therein to the accompanyingdrawings.

This ,invention relates tothat kind efflubricators known as displacement-lubricators, and it has particular referenceto the.` novel construction and arrangement of a sight-feed fitting `and of a water seal at the discharge end of the condenser, all as y more fully hereinafter described', and shown in the accompanying drawings, in whicht Figure l is an elevation of my improved lubricator as connected up to the steam-supply pipe of an engine. Fig. 2 is a verticalcentral section through the lubricator detached, and Fig. 3 is a detached vertical section showing the construction of the water seal.

In the drawings', A is the lubricator-cup, and Bis the gage-glass connected thereto and provided with a screw-plug C for filling the cup with the lubricant and with a drainagecock D, all in the usual manner.

E is a hollow fitting forming a sight-feedl chamber a by means of glass disks secured opposite each other in the front and rear walls of the chamber in the known manner. This fitting is mounted on top of the oil-cup by means of a hollow arm b on the fitting, which screws into an orifice in the top of the oil-cup. Another hollow arm c, provided on top of 'thefltting, forms the means for connecting it with a suitable condenser head or pipe d, which communicates with the source of steam under control of a valve e, and a third hollow arm if, projecting laterally, forms the means for connecting it to the steam-pipe of the engine. The hollow arms c b are connected by a condensed-water passageformed in the body of the fitting to one side of the sight-feed chamber with a suitable valve h, arranged to control this passage. In the lower end of this passage is secured the tube ,-which forms'a continuation of this passage down to near the bottom of the cup. The lower end Yof this tube is provided with a water seal essentially consisting of a well or cup j, surrounding the discharge-opening of the tube, and a deflector lo, secured slightly above seria no, 15.579. (No modi-,1.5

cates through ashort and relatively wide passage p with the hollow discharge-arm f, which conducts the oil into the steam-pipe F through y a short valved connection Gr. A nozzle q, projecting into the sight-feed chamber through the bottom, forms, as usual, the oil-inlet into the Asight-feed chamber. This nozzle is secured inposition by means of a tube r, which is screwed at the lower end. into the nipple `of the stuffing-box s and seated at its upper end in the tubular extension q' of the nozzle. A valve-stemt passes upwardly through the stuffing-box s and tube r 'and has a screwthreaded engagement in the extension q', which is provided with a'valve-seat q2 and ad- Vmission-ports o.

rlhe parts being constructed as shown and described it will be seen that the hydrostatic column for the displacement of the oil is formed in the pipe d, passage g, and extension while the sight-feed chamber d is filled wit-h water of condensation by-cornmunicating with the steam-pipe through the arm f, and inthe normal operation the oil in the cup will therefore be displaced and flow through the ports o, nozzle q, sight-feed chamber a, port o, passage p, and arm f into thesteam- -pipe and to the part to be lubricated, as in the usual'oper'ation of sight-feed lubrica'tors of like character.

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quently, has a leaky seat. This blowing out of the water under such circumstances is pre vented in my construction by the deflector over the cup, and thus I preserve the water seal underall contingencies and guard against all possibility of wasting oil (by displacement through the water-column) or of bringing the steam into direct contact with the oil in the cup.

Incidentally it may be mentioned here that it is impractical to use a check-Valve at the end of the tube t', as this gives the oil no room for possible expansion when the valves h and are closed.

A further advantage of my construction is that the lubricator when put into operation will begin to feed quickly, as it requires but a small hydrostatic pressure tordisplace the oil owing to the absence of the internal friction-that is, the oil feeds directly from the top of the cup into the nozzle and sight-feed chamber, and thence is fed by its ownl gravity through a large opening in the discharge-arm into the steam-pipe.

It will be observed that the arm b of the fitting in reality forms the neck of the cup, and the oil thus flows directly from this neck into the nozzle. Further, there is only a relatively small quantity of oil in the annular chamber in the neck, and the walls of this annular chamber are in near heat-conducting proximity to the live steam in the arm f, and the small quantity of oil in the neck is thus readily heated and feeds freely, and certain oils which are difficult to feed with other lubricators can be used in my cup. There is also no possibility of the oil-passages becoming clogged up.

The advantages which the construction offers on account of its simplicity, from the manufacturer-s point'of view, are also considerable and will be well understood by those skilled iu the art.

That I claim as my invention is- 1. In a condensation-displacement lubricator, the combination'with the oil-reservoir, of an inlet-tube for the water of condensation leading through the top of said reservoir to near the bottom thereof and havingits lower end closed, a cylindrical cup closed at the bottom and open on top secured to the lower end of said tube and adapted to form a water seal around the discharge end of said inlettube, perforatious in the side of said tube near the bottom ofthe cup, and a detlector secured upon the inlet-tube above the cup and forming an annular discharge-ou tlet between it and the top of the cup.

2. In a condensation-displacement lubricator, the combination of. the oil-reservoir A, a fitting E having an upwardly-extending arm c, to which the condenser is attached, and a downwardly-extending arm b secured in t-he top of the reservoir and connected by a passage through the itting with the arm c, a valve 7L controlling the iiow of the water of condensation through said passage, the tube t secured iu the lower end of said passage and extending down to near the bottom of the oil-reservoir, the cupj secured to the lower end of said tube and forming a water seal for said tube7 and the defiector 7c vertically adjustably secured upon said tube above the cup and independently thereof.

3. In a condensation-displacement lubricator, the combination of the oil-reservoir, a fitting having a downwardlyextending arm connecting it t0 the top of the reservoir and an upwardly-extending arm connecting it to the condenser, a valve-controlled passage connecting the two arms through the body of the fitting and forming an inlet for the water ot' condensation into the reservoir, a sightchamber formed in the body of the fitting, a lateral discharge-arm from said fitting communicating with the top of the sight-chamber, and a valve-controlled nozzle in the lower arm of the fitting leading into the bottom of the sight-chamber, Said lower arln of the fitting being chambered and forming an upper extension of the reservoir in direct communication with the nozzle and in heating proximity of the discharge-arm.

4. In a condensation-displacementlubricator, the combination of the oil-reservoir A, formed with au orifice in its top, the IittingE having an inlet-arm b secured in said orifice and forming the neck of the oil-reservoir, a valve-controlled passage g through said fitting, a condenser-pipe d communicating with the upper end of said passage, au inlet-tubei extending from the lower end of said passage into the oil-reservoir, a sight-feed chamber a in the body of the tting, the lateral discharge-armfand the nozzle q in the inletarm through which the neck of the oil-reservoiris in direct communication with the sightchamber, the tubular extension q' of the nozzle, the tube fr securing said nozzle in position and the valve-stem extending through Said tube. 1

5. The combination of an oil-reservoir, a sight-feed fitting having a downwardly-extending arm, connecting the fitting into the top of the oil-reservoir, a sight-chamber centrally in the body of the fitting, and in direct communication with the oil-reservoir through a passage in the aforesaid arm, an upwardlyextending arm on said fitting comm unieating through a passage in the fitting with the downwardly-extending arm, a condenser-pipe counecting said upwardly-extending arm with the steam-pipe, and a laterally-extending arm on said fitting connecting it with the steampipe and forming a steam-chamber contiguous to the sight-chamber and connected by a passage in the fitting with said sight-chamber for the discharge of the oil into said chamber.

In testimony whereof I aix my signature in presence of two witnesses.

ELIJAH MCCOY.

Witnesses:

O'rro F. BARTHEL, Jos. A. N oELKE.

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